Advertisement
VID5/GPIO5
VID4/GPIO4
VID3/GPIO3
VID2/GPIO2
VID1/GPIO1
VID0/GPIO0
GPIO6
PWM1
PWM2
PWM3
TACH1
TACH2
TACH3
TACH4
THERM
V
CC
D1+
D1−
D2+
D2−
+5V
IN
+12V
IN
+2.5V
IN
V
CCP
SCL
SDA
P
Arrow.com.
Arrow.com.
Downloaded from
Downloaded from
PWM REGISTERS
AND CONTROLLERS
(HF AND LF)
PERFORMANCE
V
TO ADT7476A
CC
BAND GAP
TEMP. SENSOR
Figure 1. Functional Block Diagram
t
LOW
t
R
t
HD; STA
t
HD; DAT
t
BUF
S
Figure 2. Serial Bus Timing Diagram
ADT7476A
ADDR
ADDREN
SELECT
SMBus
VID/GPIO
ADDRESS
REGISTER
SELECTION
AUTOMATIC
FAN SPEED
CONTROL
FAN SPEED
COUNTER
MONITORING
THERMAL
PROTECTION
ACOUSTIC
ENHANCEMENT
CONTROL
INPUT
SIGNAL
10-BIT
CONDITIONING
AND
ANALOG
MULTIPLEXER
BAND GAP
REFERENCE
GND
t
F
t
HIGH
t
SU; DAT
S
www.onsemi.com
2
SCL
SDA
SMBALERT
SERIAL BUS
INTERFACE
ADDRESS
POINTER
REGISTER
PWM
CONFIGURATION
REGISTERS
INTERRUPT
MASKING
INTERRUPT
STATUS
REGISTERS
LIMIT
COMPARATORS
ADC
VALUE AND
LIMIT
REGISTERS
t
HD; STA
t
t
SU; STA
SU; STO
ADT7476A
P
Advertisement
